Join some institute where you can learn HTML basics, once you are done can join some software house implementing software development. It will be beneficial for you to learn lot of HTML / CSS professional code.

Basic HTML

you learn fist basic HTML and These tutorials are set up so you can move through them over a week's time. One tutorial per day. However, if you can go faster, do it! Some have told me that they finished the primers in a day. Good luck.